/*-
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Chris Torek.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)stdio.h	8.5 (Berkeley) 4/29/95
 * $FreeBSD: src/include/stdio.h,v 1.56.8.1 2006/01/31 17:57:17 stefanf Exp $
 */

#ifndef	_STDIO_H_904FA35D_7831_47dc_A883_B4572786B47E
#define	_STDIO_H_904FA35D_7831_47dc_A883_B4572786B47E

#include <stdarg.h>
#include <types.h>
#include <retcode.h>
#include <sys_config.h>
#include <osal/osal.h>
#include <api/libc/list.h>
#include <api/libfs2/types.h>

#define fpos_t long long		

/*
 * This global flag is non-zero when a process has created one
 * or more threads. It is used to avoid calling locking functions
 * when they are not required.
 */
extern int	__isthreaded;

//#define	_FSTDIO			/* Define for new stdio with functions. */

/*
 * NB: to fit things in six character monocase externals, the stdio
 * code uses the prefix `__s' for stdio objects, typically followed
 * by a three-character attempt at a mnemonic.
 */

/* stdio buffers */
struct __ssbuf {
	unsigned char *_base;
	int	_size;
};

/* hold a buncha junk that would grow the ABI */
struct __sFILEX;

/*
 * stdio state variables.
 *
 * The following always hold:
 *
 *	if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
 *		_lbfsize is -_bf._size, else _lbfsize is 0
 *	if _flags&__SRD, _w is 0
 *	if _flags&__SWR, _r is 0
 *
 * This ensures that the getc and putc macros (or inline functions) never
 * try to write or read from a file that is in `read' or `write' mode.
 * (Moreover, they can, and do, automatically switch from read mode to
 * write mode, and back, on "r+" and "w+" files.)
 *
 * _lbfsize is used only to make the inline line-buffered output stream
 * code as compact as possible.
 *
 * _ub, _up, and _ur are used when ungetc() pushes back more characters
 * than fit in the current _bf, or when ungetc() pushes back a character
 * that does not match the previous one in _bf.  When this happens,
 * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
 * _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
 */
typedef	struct __ssFILE {
	unsigned char *_p;	/* current position in (some) buffer */
	int	_r;		/* read space left for getc() */
	int	_w;		/* write space left for putc() */
	short	_flags;		/* flags, below; this FILE is free if 0 */
	short	_file;		/* fileno, if Unix descriptor, else -1 */
	struct	__ssbuf _bf;	/* the buffer (at least 1 byte, if !NULL) */
	int	_lbfsize;	/* 0 or -_bf._size, for inline putc */

	/* operations */
	void	*_cookie;	/* cookie passed to io functions */
	int	(*_close)(void *);
	int	(*_read)(void *, char *, int);
	fpos_t	(*_seek)(void *, fpos_t, int);
	int	(*_write)(void *, const char *, int);

	/* separate buffer for long sequences of ungetc() */
	struct	__ssbuf _ub;	/* ungetc buffer */
	struct __sFILEX *_extra; /* additions to FILE to not break ABI */
	int	_ur;		/* saved _r when _r is counting ungetc data */

	/* tricks to meet minimum requirements even when malloc() fails */
	unsigned char _ubuf[3];	/* guarantee an ungetc() buffer */
	unsigned char _nbuf[1];	/* guarantee a getc() buffer */

	/* separate buffer for fgetln() when line crosses buffer boundary */
	struct	__ssbuf _lb;	/* buffer for fgetln() */

	/* Unix stdio files get aligned to block boundaries on fseek() */
	int	_blksize;	/* stat.st_blksize (may be != _bf._size) */
	fpos_t	_offset;	/* current lseek offset */
} FILE;

struct __sDate{
	WORD	yyyy;
	BYTE	mm;
	BYTE	dd;
};

struct __sTime{
	BYTE	hh;
	BYTE	mm;
	BYTE	ss;
};

typedef struct {
	UINT8 is_dir;
	int	size;	/* if size < 0, than it is a directory */
	char	name[550];
	struct __sDate date;
	struct __sTime time;
}F_Dirent;

typedef struct{
	UINT32 id;
	char path[1024];
}DIR;

#define FINDDATA_FILE_NAME_SIZE	  64

typedef struct{
    unsigned short  attrib;         /* File attribute. */
    unsigned long  time_create;    /* Time of file creation */
    unsigned long  time_access;    /* Time of last file access (?L for FAT file systems) */
    unsigned long  time_write;     /* Time of last write to file */
    unsigned long  size;           /* Length of file in bytes */
    char    name[FINDDATA_FILE_NAME_SIZE];       /* Null-terminated name of matched file/directory, without the path */
}FINDDATA;

#ifndef PATH_MAX
#define PATH_MAX 1024
#endif


#define	__SLBF	0x0001		/* line buffered */
#define	__SNBF	0x0002		/* unbuffered */
#define	__SRD	0x0004		/* OK to read */
#define	__SWR	0x0008		/* OK to write */
	/* RD and WR are never simultaneously asserted */
#define	__SRW	0x0010		/* open for reading & writing */
#define	__SEOF	0x0020		/* found EOF */
#define	__SERR	0x0040		/* found error */
#define	__SMBF	0x0080		/* _buf is from malloc */
#define	__SAPP	0x0100		/* fdopen()ed in append mode */
#define	__SSTR	0x0200		/* this is an sprintf/snprintf string */
#define	__SOPT	0x0400		/* do fseek() optimization */
#define	__SNPT	0x0800		/* do not do fseek() optimization */
#define	__SOFF	0x1000		/* set iff _offset is in fact correct */
#define	__SMOD	0x2000		/* true => fgetln modified _p text */
#define	__SALC	0x4000		/* allocate string space dynamically */
#define	__SIGN	0x8000		/* ignore this file in _fwalk */

/*
 * The following three definitions are for ANSI C, which took them
 * from System V, which brilliantly took internal interface macros and
 * made them official arguments to setvbuf(), without renaming them.
 * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
 *
 * Although numbered as their counterparts above, the implementation
 * does not rely on this.
 */
#define	_IOFBF	0		/* setvbuf should set fully buffered */
#define	_IOLBF	1		/* setvbuf should set line buffered */
#define	_IONBF	2		/* setvbuf should set unbuffered */

#define	BUFSIZ	1024		/* size of buffer used by setbuf */
#define	EOF	(-1)

/*
 * FOPEN_MAX is a minimum maximum, and is the number of streams that
 * stdio can provide without attempting to allocate further resources
 * (which could fail).  Do not use this for anything.
 */
				/* must be == _POSIX_STREAM_MAX <limits.h> */
#define	FOPEN_MAX	20	/* must be <= OPEN_MAX <sys/syslimits.h> */
#define	FILENAME_MAX	1024	/* must be <= PATH_MAX <sys/syslimits.h> */

/* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
#define	L_tmpnam	1024	/* XXX must be == PATH_MAX */
#define	TMP_MAX		308915776

#ifndef SEEK_SET
#define	SEEK_SET	0	/* set file offset to offset */
#endif
#ifndef SEEK_CUR
#define	SEEK_CUR	1	/* set file offset to current plus offset */
#endif
#ifndef SEEK_END
#define	SEEK_END	2	/* set file offset to EOF plus offset */
#endif


__BEGIN_DECLS
/*
 * Functions defined in ANSI C standard.
 */
 
FILE	*fopen(const char * __restrict, const char * __restrict);
int		fclose(FILE *);
size_t	fread(void * __restrict, size_t, size_t, FILE * __restrict);
size_t	fwrite(const void * __restrict, size_t, size_t, FILE * __restrict);
int		fseek(FILE *, off_t, int);
size_t	fread_std(void * __restrict, size_t, size_t, FILE * __restrict);
size_t	fwrite_std(const void * __restrict, size_t, size_t, FILE * __restrict);
int		fseek_std(FILE *, long, int);
int		fflush(FILE *);
void	rewind(FILE *);
int		remove(const char *);
int 	frename(const char *old_file, const char *new_file);

int		fputs(const char * __restrict, FILE * __restrict);
char	*fgets(char * __restrict, int, FILE * __restrict);
int		fputc(int, FILE *);
int		fgetc(FILE *);
void	clearerr(FILE *);
int		feof(FILE *);
int		ferror(FILE *);
FILE	*fdopen(int, const char *);
int		fileno(FILE *);

int		fprintf(FILE * __restrict, const char * __restrict, ...);
int		vfprintf(FILE *stream, const char *format, va_list arg_ptr);

off_t	ftell(FILE *);
long	ftell_std(FILE *);
off_t	ftello(FILE *fp);

int		getc(FILE *);
int		putc(int, FILE *);

int		setvbuf(FILE * __restrict, char * __restrict, int, size_t);
int		ungetc(int, FILE *);


int		frmextname(char *path);
void 	fgetdevname(const char *path, char *dev);

INT32 	fsync(const char *path);

int 	fmkdir(const char *path);

DIR 	*fopendir(const char *path);
int 	freaddir(DIR *dir, F_Dirent *dest);
int 	frewinddir(DIR *dir);
int 	fclosedir(DIR *dir);

int 	femptydir(const char *path);
int 	femptydirre(const char *path);
int 	frmdirempty(const char *path);
int 	frmdir(const char *path);

int 	ffindfirst(char *filespec, FINDDATA *find_data, int *handle);
int		ffindnext( int handle, FINDDATA *find_data);
int 	ffindclose(int handle);



/*
 * Functions internal to the implementation.
 */
int	__srget(FILE *);
int	__swbuf(int, FILE *);

/*
 * The __sfoo macros are here so that we can
 * define function versions in the C library.
 */
#define	__sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))

#if 0 //Roman: disable it, it will casue dual-cpu compile error.
#if defined(__GNUC__) && defined(__STDC__)
static __inline int __sputc(int _c, FILE *_p) {
	if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
		return (*_p->_p++ = _c);
	else
		return (__swbuf(_c, _p));
}
#else
/*
 * This has been tuned to generate reasonable code on the vax using pcc.
 */
#define	__sputc(c, p) \
	(--(p)->_w < 0 ? \
		(p)->_w >= (p)->_lbfsize ? \
			(*(p)->_p = (c)), *(p)->_p != '\n' ? \
				(int)*(p)->_p++ : \
				__swbuf('\n', p) : \
			__swbuf((int)(c), p) : \
		(*(p)->_p = (c), (int)*(p)->_p++))
#endif
#endif

#define	__sfeof(p)	(((p)->_flags & __SEOF) != 0)
#define	__sferror(p)	(((p)->_flags & __SERR) != 0)
#define	__sclearerr(p)	((void)((p)->_flags &= ~(__SERR|__SEOF)))
#define	__sfileno(p)	((p)->_file)


#define	feof(p)		(!__isthreaded ? __sfeof(p) : (feof)(p))
#define	ferror(p)	(!__isthreaded ? __sferror(p) : (ferror)(p))
#define	clearerr(p)	(!__isthreaded ? __sclearerr(p) : (clearerr)(p))

#define	fileno(p)	(!__isthreaded ? __sfileno(p) : (fileno)(p))


//#define	getc(fp)	(!__isthreaded ? __sgetc(fp) : (getc)(fp))
//#define	putc(x, fp)	(!__isthreaded ? __sputc(x, fp) : (putc)(x, fp))


__END_DECLS
#endif /* !_STDIO_H_904FA35D_7831_47dc_A883_B4572786B47E */



